Service difficulty report · Controller · Boeing 727227

Difficulty date
January 19, 2012
Submitted
January 19, 2012
Operation
Air carrier
Aircraft
N495FE
Make and model
Boeing 727227
Aircraft serial
21669
Aircraft time
39,928 hours, 28,056 cycles
Part
Controller
Part number
65249201
Part serial
650101
Condition
Malfunctioned
Location
Overheat System
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
D

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PRIOR TO TAKEOFF, WHEEL WELL FIRE LIGHT AND BELL CAME ON INTERMITTENTLY APPROX 5 TIMES. AFTER WHICH WHEEL WELL FIRE WARNING WOULD NOT TEST. CHECKED MLG WW WIRING & SENSING ELEMENTS IAW WDM 26-12-01 & MM 26-12-001, ALL CHECKED GOOD. POWER & GROUND TO FIRE & OVERHEAT CONTROLLER UNIT M113 ALSO CHECKED GOOD. R & R FIRE & OVERHEAT DETECTOR CONTROLLER UNIT M113 IAW MM 20-10-017-2. FIRE & OVERHEAT DET SYS CHECKED GOOD REF 26-12-001-5.